function App() {
  const style = {
    color: 'blue',
    fontSize: '16px'
  }
  return (
    <div className="App">
      <span style={{ color: 'red' }}>我是行内1</span>
      <span style={style}>我是行内2</span>
      <span className='foo'>外部引入</span>
    </div>
  )
}

export default App

















